package day11;

import java.util.concurrent.locks.ReentrantLock;

//测试死锁: 实现两个线程 持有多个锁  让其相互持有对方的锁
public class TestDeadLock {

    public static void main(String[] args) {
        String s1="java";
        String s2="mysql";
        new Thread(()->{
            synchronized (s1){
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("线程1获取了S1的锁,等待获取S2的锁");
                synchronized (s2){
                    System.out.println("线程1获取了S1和S2的两把锁");
                }
                System.out.println("线程1释放了S2的锁");
            }
            System.out.println("线程1释放了S1的锁");
        }).start();


        new Thread(()->{
            synchronized (s2){
                System.out.println("线程2获取了S2的锁,等待获取S1的锁");

                synchronized (s1){
                    System.out.println("线程2获取了S1和S2的两把锁");
                }
                System.out.println("线程2释放了S1的锁");
            }
            System.out.println("线程2释放了S2的锁");
        }).start();
    }
}
